Electric alarm.



A. HOGE.

ELECTRIC ALARM.

APPLICATION FILED 0013.13, 1910.

1,084,800. Patented Jan. 20, 1914.

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A. HUGE.

ELECTRIC ALARM.

APPLIOATION- FILED OGT.13, 1910 Patented J an. 20, 1914.

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UNITED STATES PATENT OFFICE.

AUGUST HOGE, OF NEW YORK, N. Y.

ELECTRIC ALAnM.

To all whom it may concern:

Be it known that I, AUGUST Hon-n, a subject of the Emperor of Germany, residing at New Y0rk.city, in the county "of New York and State of New York, have invented certain new and useful Improvements in Electric Alarms.

This invention relates to electric alarms, and more particularly to those which are adapted to be conveniently attached to the ordinary alarm clock now in use.

The object of the invention is to providea simple, practical and etficient electric alarm of the character described, whereby an ,additional alarm is intermittentl sounded in addition to the ordinary continuous alarm formin a part of the clock.

Anotherobject of the invention is to provi de means which is operated by the rotation of the key, which is turned by the gearing of the clock during the ringing of the continuous alarm of the clock, and further in a suitable battery and bell electrically connected to suitable contacts which are pro erly insulated from the metallic parts o clock.

A further object of the invention is in the provision of means which is operated by one of the slow rotating shafts of the clock gearin and adaptedto cooperate intermittently with asuitable contact formin a part of the electrical connections of the evice.

Other objects and advantages will be aparent from the, following description and it will be understood that changes in the specific structure shown and described may be made within the scope of the claims without departing from the "spirit of the. invention.

In the drawings: Figure 1 is a rear view of an ordinary alarm clock mounted upon a suitable case, showing the invention as applied thereto. Fig. 2 is a similar view with the rear cover of the clock casing removed, with the base in section showin the battery and wire connections leading t erefrom to the contacts. Fig. 3 is a side elevation of the clock casing showing the movable contact which is operated by the rotation of the key from the alarm shaft of the clock. Fig. 4 is an enlarged detail vertical section of one of the slow running gears of the clock, and the metallic contact in connection therewith for completing the circuit. Fi 5 is a vertical longitudinal section of t e movable contact which is insu- Speciflcation of Letters Patent.

Application filed October 13. 1910. Serial No. 586.863. u I

the

Patented Jan. 20. 191 4.

lated from the cover of the clock. Fig. (3 is a diagrammatic view of the circuits.

Referring to the drawings, 1 represents an ordinary alarm clock having the usual gong 2 and winding key 3 in connection therewith, the latterprojecting beyond the back of the clock and is rotated during the ringing of the continuous alarm, whereby a movable electrically connected contacting device is automatically operated to close the circuit to sound an additional alarm intermittently. the mechanism and connections to the battery and the alarm last referred to being constructed and arranged in the manner now to be described. Located within the case 4 are dry batteries 5 having-the usual positive and negative poles 6 and 7 respectively, and attached to the positive pole is one end of a wire 8 which leads to and is attached to one of the binding screws of an ordinary electric alarm or bell 9, said alarm being attached to the outside of the case below the clock mounted thereon. Secured to the cover 10 of the clock is a wooden strip 11, and loosely pivoted to one end of said strip is a switch arm 12 which is adapted to contact with the point 13 when one of the wings of the key 3 moves the switch arm 12 in its dotted line position of Fig. 1. When it is desired to open the circuit the switch arm 12 is swung out of contact with point 13, the swinging movement being limited by pin 19 suitably secured to the back of the clock. It will be of course understood that the switch arm 12 is' of sufiicient length to be engaged by the wings of the winding key 3, and when said key is being rotated by the usual alarm mechanism of a clock the switch arm 12 will be moved over upon the. wooden strip 11 and in contact with the point 13, thereby establishing an electrical current through the back of the clock 10. Rigidly fixed to the frame of the clock, and properly insulated therefrom is a metallic support 15, and pro jecting outwardly therefrom is a yielding wire or metallic strip 16, the support 15 being in electrical connection with one of the binding posts of the intermittently operative alarm 9. Fixed to the slow running shaft 17 of the clock gearing is a substantially LI" shaped rotatable switch arm 18 adapted to contact with the wire or yielding strip 16 during the revolution of the shaft. The, contacting ends of the U-shaped switch arm are so arranged that they will close the circuit when in their contacting position and sound I pole the alarm, and after the switch 12 is in its closed position. Attached to the point 13 is one end of a conducting wire 20 which leads to and is connected to the negative of one of the batteries 5, whereby a complete circuit is established between various parts of the device when the lever '12 is moved over the contact point 13 by the alarm winding key 3. The conducting wire.

20 is suitably connected to the contact 13, said contact being suitably secured to the wooden strip 11, which forms an insulation for the contact 13. It will be noted that the pivot of the switch arm 12 passes through the wooden strip and is secured directly to the back of the clock thus utilizing this portion of the clock as a conductor to complete the circuit when the switch arm 12 contacts at the point 13.

In Fig. 2 the support 15 is suitably insulated from the clock back 10, while the outer I carried by the back of the clock, a switch arm fixed to the slow running shaft of the Clt 2k gearing and projecting therefrom, and adapted to contact with the strip, a bell and battery, a suitable electrical connection between the latter and switch and switch arm, so that when the switch arm contacts with said strip the circuit is closed and the bell sounded.

2. The combination with an ordinary alarm clock and winding key for the alarm thereof, of a plate secured to the cover of the clock and insulated therefrom, a lever movably secured to said plate and of a length to normally rest in close proximity to said winding key, a battery and bell electrically connected, an arm rigidly secured to a slow running shaft of the. clock gearing and projecting from said shaft, a support fixed to the frame for the clock gearing and insulated therefrom, a yielding plate projecting upwardly from the support against which the opposite ends of the arm carried by the shaft of the clock gearing are adapted to contact, a conducting wire leading from the support of the plate, and a conducting wire leading from the pivotal end of the lever forming the switch, whereby when the arm contacts with the yieldable plate the circuit is closed and the bell sounded.

In testimony whereof I afiix my signature, in the presence of two witnesses.

AUGUST HOGE.

\Vitnesses:

FRANK GMAINER, [11. 5.] WM. GUDAT. [L.S.] 

